| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] [num] per | 9 |
|
| 2 | at a [adj] [num] [no cls] | 9 |
|
| 3 | at a [adj] [num] [unc] | 9 |
|
| 4 | at a [adj] [num] per | 9 |
|
